Trafficked: Underworlds With Mariana van Zeller

Mariana goes inside the world of contract killers.

Mariana delves into a new scheme called sextortion, where compromising photos are used to extort victims; while searching for the scammer who targeted a young American, she uncovers a scam culture even more terrifying than she had imagined.

The trafficking of human remains yields billions of dollars globally and remains clandestine; Mariana's investigation reveals the vulnerability of anyone to human remains trafficking.

Americans spend more per capita on prescription drugs than anywhere else in the world. That's why nearly 20 million US citizens are turning to the black market for their meds — and why criminals are eager to cash in on the rising demand. In this episode, Mariana heads to Mexico and India to meet some of the underworld opportunists risking the lives of vulnerable patients.

Mariana heads to the Congo to investigate the illegal trade in wild apes that have them on the brink of extinction. She'll follow the supply chain from the poachers to the middlemen and ultimately to the buyers, many in the Middle East, who use these apes as pets and in sideshow attractions. She'll also spend time with Congolese activists who are fighting to protect apes from extinction.

As the debate over America's broken immigration system continues to boil, Mariana heads to Mexico to investigate the billion-dollar business of people smuggling to the US. While following a 2,000-mile trail from Tapachula to the US border, she'll try to understand who's making the money, how the cartels are involved, and why so little is being done to stop it.